The SARS CCP worked with a team from the East Anglian Air Ambulance to treat a male patient, thought to be in his seventies, at the scene. “The patient was later taken to hospital in a critical condition,” a spokesman said.

The East of England Ambulance Service said two ambulances, an ambulance officer, the air ambulance and a basics doctor attended.

“A man, age unknown, was taken by road to West Suffolk Hospital with a suspected cardiac arrest,” a spokesman added.